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Synthesis and structural characterization of a series of lanthanide stannate pyrochlores

机译:镧系锡酸盐烧绿石的合成与结构表征

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A simple hydrothermal method has been employed to prepare a series of lanthanide stannate pyrochlores Ln(2)Sn(2)O(7) (Ln = Y, La, Pr-Yb) at a relatively low temperature of less than 200 C successfully. On the basis of structural characterizations by X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR) absorption spectroscopy and Raman spectroscopy, it Was found that the positions of hands in vibrational spectra are sensitive to the ionic radius of Ln(3+), and the linear relationship can be seen between the frequency of Sn-O stretching mode and the lanthanide ionic radius in IR spectrum, as well as the frequency of O-Sn-O bending mode and the lanthanide ionic radius in Raman spectrum. (C) 2008 Elsevier Ltd. All rights reserved.
机译:一种简单的水热方法已被用来成功地在相对较低的温度(小于200℃)下制备一系列镧系锡酸盐烧绿石Ln(2)Sn(2)O(7)(Ln = Y,La,Pr-Yb)。根据X射线粉末衍射(XRD),傅立叶变换红外(FT-IR)吸收光谱和拉曼光谱的结构表征,发现振动光谱中手的位置对Ln的离子半径敏感3+),可见IR光谱中Sn-O拉伸模式的频率与镧系元素离子半径之间的线性关系,以及拉曼光谱中O-Sn-O弯曲模式的频率与镧系元素离子半径之间的线性关系。 (C)2008 Elsevier Ltd.保留所有权利。

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